Finding the Fourth Proportional to 12,983.12, 17,910.96 and 10,196.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,983.12 : 17,910.96 = 10,196.72 : x
2. Step 2: Convert to fraction form
   12,983.12/17,910.96 = 10,196.72/x
3. Step 3: Cross multiply
   12,983.12x = 17,910.96 × 10,196.72
4. Step 4: Simplify right side
   12,983.12x = 182,633,044.05
5. Step 5: Solve for x
   x = 182,633,044.05/12,983.12
6. Step 6: Final answer
   x = 14,066.96